Bela wolf



(No Model.)

B. WOLF. GAS 0R PETROLEUM ENGINE 0R MOTOR.

No. 566,263. Patented Aug. 18, 1896.

| Vl l UNITED STATES PATENT OEEICE.

BELA WOLF, OF MLHEIM, GERMANY.

GAS OR PETROLEUM ENGINE OR MOTOR.

SPECIFICATION forming part of Letters Patent No. 566,263, dated August18, 1896. Application led December 14, 1895. Serial No. 572,158. (Nomodel.)

To @ZZ whom t may concern:

Be it known that I, BELA VOLF, a subject of the Emperor of Austria-H ungary, residing at Mlheim, Germany, have invented new and usefulImprovements in Gas or Petroleum Engines or Motors, of which thefollowing is a specification.

This invention relates to gas or petroleum engines or motors whereincombustible charges are ignited to drive or propel a piston moving in aworking cylinder which is provided with an inlet-valve to control theadmission of the charge into the cylinder at one side of the piston.

In the larger engines or motors of the character alluded to the fixedguide for the spindle of the inlet-valve becomes heated to such extentthat the entering air is highly heated thereby and expands beforeentering the working cylinder7 thus diminishing the weight ot' thecombustible charge admitted into the cylinder and proportionatelydecreasing the power of the engine or motor.

The object of my invention is to avoid the objection stated byconstructing the iixed guide for the spindle of the inlet-valve in suchmanner that it can be cooled internally and presents an expanded orlarge exterior cooled surface7 whereby the entering air is effectuallycooled by the spindle-guide in the chamber where the air and gascommingle and the charge enters the working cylinder without the airbeing expanded or rareed.

To accomplish this object my invention involves the features ofconstruction, the combination or arrangement of parts, and theprinciples of operation hereinafter described and claimed, referencebeing made to the accompanying drawing, in which the iigure is a centralsectional view of one end portion of the working cylinder of a gas orpetroleum engine or motor embodying my invention.

In order to enable those skilledin the art to make and use my invention,I will now describe the same in detail, referring to the drawing,wherein` The numeral l indicates the working cyl inder of a gas orpetroleum engine or motor. This cylinder may be provided, as usual, witha water-jacket for cooling the same, and at one end portion the cylinderis reduced in diameter and constructed with an air-inlet 2 and agas-inlet 3. At one end of the cylinder is arranged a mixing-chambercomposed of a cylindrical tubular portion et, provided center of aspindle- 6o' Water-circulating chamber 10, communicating withinlet-passages 11 and l2 of comparatively small diameter in such mannerthat a cooling fluid, such as water, can be introduced into the passage1l and caused to circulate through the chamber lO and escape through thepassage 12, thereby cooling the spindle 8 of the inlet-valve 7. Theenlarged or expauded inner end portion of the spindle-guide is alsocooled externally and presents a very large cooling-surface, so that theair entering the inlet 2 into the mixing-chamber, into which thespindle-guide extends, is effectually cooled, so that it will notexpand. By this means the weight of the charge introduced into theworking cylinder is not diminished and the full power of the engine ormotor is secured.

The gas or other combustible fluid entering the inlet 3 passes throughthe orifices 5 into the mixing-chamber surrounding the inner end portionof the spindle-guide, where such fluid commingles or mixes with thecooled air. In the arrangement shown the gas or other combustible fluidentering the inlet 3 is also cooled by the expanded or largecooling-surface afforded by the inner end portion of the spindleguide.The cooling of the gas or other combustible fluid, however, owing to itssmall quantity in proportion to the quantity of air, is less importantthan the cooling of the air, and therefore the gas or other combustiblefluid may be caused to enter through a special valve, as in ordinarygasengines.

The extended or large cooling-surface af'- .torded by the expanded innerend portion of cool the cythe spindle-guide also serves Ato IOOlindrical tubular portion or valve-casing 4, so that this valve-casing,as Well as the spindle of the inlet-valve, and the inlet-valve itself,are protected against superheating by the gases of explosion, and,further, the ignition of the charge on the valve itself is prevented.

In large gas or petroleum engines the inlet-valves are easily heated toa considerable extent, so that the entering air takes up considerableheat by contact with the hot walls of the valves, the spindle-guides,and the valve-spindles.

It has been proposed to cool the casings of the inlet-valves from theexterior, but this cooling is not effective, in that the spindle of theinlet-valve and the guide of the spindle are not prevented from becominghot. Further, the casing of the valve is often surrounded by thegas-channel, so that one portion of the outer cooling-surface is lost.By my invention the casing of the inlet-valve is cooled from the insideby allowing Water to ilow through the circulating-chamber in the guidefor the spindle of the inlet-valve. To secure the result attained by me,it is essential that the inner end portion of the spindleguide beenlarged in order that it Will present an extended or largecooling-surface to the air in the mixing-chamber.

Having thus described my invention, what l claim isl. The combinationwith the Working cylinder of a gas or petroleum engine, having air andgas or petroleum inlets, and an inletvalve provided with a spindle, of aspindleguide arranged in the path of the entering air and having itsinner end portion expanded and constructed With an internalWater-circulating chamber, for the purpose of cooling the air prior tothe charge entering the Working cylinder through the inlet-valve,substantially as described.

2. The combination with the working cylinder of a gas or petroleumengine, having air and gas or petroleum inlets, and a mixing-chamberprovided With an inlet-valve controlling communication with the Workingcylinder, of a guide for the spindle of the said inlet-valve, extendinginto the said mixingchamber and having an expanded or widened inner endportion containing an internal Water-circulating chamber for coolingsaid guide and thereby cooling the valve-spindle and the air whichenters the mixing-chamber in transit to the Working cylinder,substantially as described.

3. The combination with the Working cylinder of a gas or petroleumengine, of a spindie-guide having its inner end portion expandedlaterally and constructed With an internal, cool-fluid circulatingchamber and passages for the inlet and outlet of the cool fluid, amixing-chamber surrounding the laterally-expanded end of thespindle-guide, a gas-chamber surrounding the mixing-chamber andcommunicating therewith through suitable orices, an air-inlet to themixingchamber, a gas-inlet to the gas-chamber, and an inlet-valvearranged at the inner end of the mixing-chamber and having a spindleextending longitudinally through the spindleguide, whereby the air andgas and valvespindle are cooled, substantially as described.

In testimony whereof I have hereunto set my hand in presence of tWosubscribing Witnesses.

BELA VOLF.

Vitnesses:

SOPHIE NAGEL, MARIA NAGEL.

